“The worst experience for me personally,” Mark Arnoldy shares in a comment on Reddit, “was the worry we faced in the first 72 hours after the quakes.”

On the anniversary of last April’s devastating earthquakes in Nepal, the CEO of healthcare nonprofit Possible visited Reddit for an AMA (Ask Me Anything)—to give redditors firsthand insight into the ongoing relief efforts, including how his nonprofit is working to rebuild the Nepalese healthcare system.

Last year, in the weeks following the earthquakes, Reddit users raised over $250,000 to support relief efforts on the ground in Nepal, but Arnoldy reminds them that progress is slow.

“Most of what you read today in the news will be about disappointment,” he writes when asked about the biggest obstacles to his work. “I’m also disappointed more hasn’t been done in the country.”

In his other answers to redditors’ questions, he addresses the risks of fast-paced, post-disaster fundraising, why he’s not eager to expand his nonprofit to other countries, and the best and worst experiences from his time in Nepal.

Read the full AMA discussion in Reddit’s IAmA community, or check out a few highlights from Arnoldy’s answers below.